<script>
  // 传统
  const person1 = {
    sayHi: function () {
      console.log("Hi")
    }
  }
  person1.sayHi(); //"Hi"
  // ES6
  const person2 = {
    sayHi() {
      console.log("Hi")
    }
  }
  person2.sayHi() //"Hi"
</script>